Beauty-parlor chair



Jfil .l6,1929.. E EF;- 1,721,027

BEAUTY PARLOR' CHAIR 4 Filed Aug. 9, 1928 2 Sheets-Sheet 1 (1777216722273 (U1715077) Meyer m'fl ss; Mfi/i, f

July 16, 1929.

w. MEYER l.72l,027

BEAUTY PARLOR CHAIR Filed Aug. 9, 1928 2 Sheets-Sheet 2 i Infig 1 ova 4 Patentecl July 16, 1929.

PATENT OFFICE.

WILLIAM MEYER, CHICAGO, ILLINOIS.

IBEAUTY-PARLOR CHAIR.

Application filed August 9, 1928.

My invention relates to chairs and more particularly to chairs for beauty shops and the like.

It is old to provide a chair adjustable to several positions for use by barbers, dentists, and the like, but such chairs are not well adapted to beauty shop work. I

In beauty shop work, there are, in general, two distinct operations, namely, hair dressing and facial work. The chair of my invention provides two corresponding positions. lVhile the intermediate positions are also obtainable, there are two distinct positions which must be provided for meeting the demands of beauty shop practice.

So far as I am aware, no adjustable chair has ever been designed adapted to fit the physique of women in the two desired positions, namely, for hair dressing and for facial treatment.

In the preferred form of my invention, I provide a chair which provides a considerable support, first as a straight backed chair and which may be adjusted from that position into a position providing considerable support where the body of the recipient of the treatment is tilted slightly backward, so as to bring the head in a convenient position for hair dressing and which may be brought in its extreme positionto an adj ustmentwhieh will provide a satisfactory support not only for the torso, but also the thighs which may be employed with or without a support for the legs below the knee, something which the barber chairs and the like of the prior art hav not heretofore provided.

One of the difficulties of chairs of the prior art is that when the chair is laid full back and is laid in substantially horizontal position", as for facial treatments, that is, shaving or the like in the case of barber chairs, the

angle which is made between the back and Serial No. 298,483.

straight back position which is comfortable for the occupant on sitting up straight and these same relations are preserved when the chair is swung as awhole to an angular position for hair dressing position, but the angular relation of the back, seat, leg support and foot rest are then changed when the chair is brought to the facial treatment position but the support for the thighs is maintained also in this position which is new and prevents any sliding forward tendency of the body of the occupant.

Now, in order to acquaint those skilled in the art with the manner of constructing and operating a device in accordance with my invention, I shall describe, in connection with the accompanying drawings, a specific embodiment of the invention,

Figure 1 is a side elevational view of a chair embodying my invention;

Figure 2' is a similar view of the chair shown as adjusted to hair dressing position, the dotted lines in this figure showing the chair adjusted to facial treatment position;

Figure 3 is a horizontal section, showing the mechanism for unlocking the holding means;

Figure 4 is a fragmentary front elevational view, with parts broken away to show the locking mechanism in front elevation;

Figure 5 is a fragmentary vertical sectional view, parts being shown in elevation, showing the means for locking the chair in rotary adjustment Figure 6 is a section taken substantially on line 6-4) of Figure 5; and

Figure 7 is a sectiontaken substantially on the line 77 of Figure 4.

Referring to Figure 1, the chair comprises a chair frame 1 and a base 2. The chair frame comprises a four-link parallelogrammatic frame comprising the linkage pins 8, 4;, 5 and 6. These pins are duplicated for each side of the chair, but for the purpose of considering the linkage and its mode of operation, a single side of the chair may be considered. The back 7 of the chair includes a plate or frame which is bolted to the cushion frame comprising the back 7. The back 7 is preferably padded and upholstered and I have a head rest attached thereto, as is customary in devices of this kind. It 1s to be ob. 3d, however, that the lower part of the Cir upholstery or padding extends out appreciably to provide a support for the small of the back and to give clearance at approximately the lower end where the back and the seat join to make the back member and the seat member more comfortable.

The pins 4 and 6 join a plate or link 8 to the arm frame 9 and to the seat frame 10 respectively. The pins 3 and join the leg frame 11 to the arm frame 9 and the seat frame at their forward ends. The links 8, 9, 10 and 11 comprise a substantially parallelogrammatic linkage. The leg frame 11 is extended downwardly below the seat frame 10 to form legs 12 extending down to a foot rest 13, which is pivoted between the two legs 12 on the pivot pins 14. The foot board 13 comprises a metallic frame enclosing a suitable supporting plate having supporting feet 15 to rest upon the floor. The back part of the metallic frame has an extension 16 back of the pivot 14, forming a short arm or lever which, in turn, is connected by a centrally disposed link 17 to the seat frame 10. This link 17 is pivoted to the seat frame 10 on the pivot 18 and to the arm 16 of the foot board 13 on the pivot 19.

The seat frame 10 has a cushion or seat 20 suitably upholstered and formed. It fits into the seat frame 10, the ends of the seat frame extending upwardly at the corners, so as to bring the pivot pins 5 and 6 near the surface of the seat 20. The arm frames 9 comprise an upholstered arm 22 having downwardly extending parts, such as 23 and 24 joining the pins 3 and 4 to raise the surface of the upholstered arm rest 22 to a comfortable position for the occupant of the chair. Between the legs 1212, a leg supporting cushion 25 is provided and this is suitably upholstered and shaped to support comfortably the legs at the calves, so that the occupant does not have a feeling of being suspended when in facial treatment position.

In addition to the links above described, which constitute the main chair frame, there are provided at opposite sides of the chair the intermediate or su 'iporting links 26 having their ends connected pivotally on pins 27 and 28 to the leg frames and back frames 11 and 8, respectively, and being supported on pins 29 from the U-shaped base frame 30. The U-shaped base frame 30, which forms a part of the base 2, is built up of side plates or frames 313l and a cross-piece transverse frame 32, which mounted pivotally upon a pedestal 33. The pedestal is flanged to permit convenient bolting or fastening to the floor and it has a suitable bearing shoulder 35 with a king pin 36 extending above the same. The king pin 36 extends up through the transverse member 32, which has a flanged collar 37 cut away at the rear to provide clearance for the brake shoe or clutch 38.

Brake shoe 38 is normally held in braking contact with king pin 36 by a contact screw 39 adjustably secured through a linger 4O depending from the rearward end of a clutch lever 40. This lever is pivoted at 43 to the vertically extending flange 37 of the transverse member The lever 40 is normally rocked in a clockwise direction about its pivot 43 by a compression spring 44 bearing against the end of the lever 40 in such a manner as to apply the brake shoe 38 to the pin 36. A cam member 45, mounted on a transverse shaft 46, is adapted to engage the end of the lever 40 and depress the same against the spring 44 to release the brake shoe 38. Shaft 46 bears outside of the side plate, at the right of Figure 4, a short arm 47 which acts as a cam in conjunction with the short arm or cam 48 at the lower end of a lever 50 loosely mounted on an extension of a rocker shaft 49, also mounted at the lower end of the U-shaped frame 30. Lever 50 has a suitable operating knob or handle 52, as shown in Figures 1 and 2. The handle 50 and knob 52 may be duplicated on opposite sides, if desired.

The rocker shaft 49 bears a pair of clutching cam members 53 inside of U-shaped members or stirrups 53" loose on shaft 49, and these clutch cams 5353 are adapted to engage rods 5454 at each side of the U-shaped frame 30, these rods 54 being pivotally connected at their forward ends to the leg frame members 11 by pivots 55. The rods 54 are preferably squared rods, extending between the cams 5353 and contact shoes 56-56 mounted on the bight portions of stirrups 53 and adjusted toward the rods by pressure screws 56.

A coil spring 57 is mounted about shaft 49 and has one end secured to a collar 5", which is secured on the shaft; and its other end secured to a bracket 57* fastened to the transverse frame member 32. This spring is under tension and urges the shaft in a clockwise direction, as considered in Figure 7, to cause the cams 53 to bind or clutch the rods 54 to hold the linkage of the chair in fixed position.

That is to say, all of the parts which are pivotally connected together are restrained from motion, both in respect to the pivotal connection of the various parts to each other and their common mounting on the pins 29, by a locking of the rods 54 to the U-shaped frame 30. hen it is desired to release the rods 54 to permit motion of the links with respect to each other or to move as a whole above the pivot 29, the operator grasps the handle 52 and swings the same in a counterclockwise direction, as viewed in Figure 1 and that releases the rods 54 from the bite 0 the cams 53.

Referring more particularly to Figures 3 and 4, lever 50 is provided with a lug 50*,

horizontal, and the foot board 13 substan-' When the operator desires which extends along shaft49 in the direction of a pin 49 secured through this shaft. Normally, this lug is held in contact with the pin by the pressure of spring 44: transmitted through lever 40, cam 45, shaft 46 and cams a7 and 48. The lug 50 is so proportioned as to permit movement of the lever in counterclockwise direction, as considered in Figure 1, into full releasing position without the lug contacting pin 19*. The shaft 49, therefore, will not be actuated upon movement of lever 50 for releasing the chair for movement about the stud or pin 36. However, when lever 50 is moved in the opposite direction, from normal position, shaft 19 is rocked in clockwise direction, as considered in Figure 1 (counterclockwise direction as considered in Figure 7) due to contact of lug 5O with pin 49*, thus releasing the rods 54 as above described.

Ifthe operator desires to swing thechair about the vertical bearing on the pin or stud 36, he pushes the handle 52 forwardly, that is, in a counter-clockwise direction, as viewed in Figures 1 and 2 and this causes the cam l5 (see Figure 5) to depress the forward end of the lever 40, releasing the clutch or brake shoe 38 from said stud'36 and permitting the U-shaped frame with the chair supported thereby to be swung about the vertical axis.

' The normal position of the chair is as shown in Figure 1, that is, with the back substantially vertical, the seat substantially tially horizontal. to move the chair and the occupant to aposition suitable for hair dressing, the chair frame is swung as a whole about the pivot 29.

The specific manner in which I have shown this as being accomplished in the present embodiment is the extension of the pivot pin 6 on each side into a slot or guide in each of the side plates 30, the guide or slot 60 being a box cam and being laid out on a circle or are concentric with the pivot pin 29. So long as the pins 6 lie within the slot or box cam 60, the only movement which the chair frame is capable of making is a swinging-movement as a. whole about the pivot pins 29, that is,

' on a horizontal axis.

To permit this, the rods 54 are declutched by pulling the'handle 52' rearward, as previously explained. If further angular motion of the chair as a whole is desired, beyond what is shown in full lines in Figure 2, it is obvious that the box cam 60 might be further extended. Also, it will be apparent that if thereafter the motion of the various parts of the chair is to be otherwise than a common motion on the axis of the p ns 29, a continuation or separate box cam such as 61 may be provided or the pins 6 may be permitted to escape completely from the box cam and other control of the linkage of the chair frame being provided. In the preferred form of the invention, as indicated herein, the box cam 61 which joins the care lelogrammatic linkage of the chair frame in such a manner as to permit the back to be swung further tothe rear, the seat frame extended forwardly, the foot board raised and the leg frame brought upwardly and into a further inclined position, all as shown in dotted lines in Figure 2.

Obviously, a slight motion of the intermediate link 26 is permissible but, in general, the second position, namely, facial treatment position, as shown in Figure 2, is secured mainly bypermitting the parallelogrammatic linkage of the chair frame to swing about the pivot pins 27 and 28. The two motions may be combined at either stage, without departing from my invention, but in the first stage, that is, the motion from the position shown in Figure 1, to the full line position shown in Figure 2, is chiefly an angular motion of the chair as a whole about the horizontal pivot 29 and the motion from the secondv position to the dotted line position shown in Figure 2 is chiefly an angular motion of the links with respect to each other and the angular motion of the chair as a whole about the horizontal pivot 29 being of minor importance.

The position of the parts shown in Figure 2 in both dotted lines and in full lines is a novel position forchairs of the adjustable type, that is to say I believe that I am the first to take the chair frame as a whole from 'a vertical sitting up position and swing the same like an office chair on a horizontal pivot to tilt the occupant and the chair so as to throw the occupant into a restful sitting position.

' I believe that I am the first, also, to dispose the chair parts in the position shown in dotted lines in Figure 2, where the seat portion has its forward edge raised above the rear edge when the back is thrown downward ly and the foot rest brought upwardly.

It is also novel in a chair of this type, I believe, to support the legs of the occupant in the manner herein illustrated.

The control of the two separate motions, namely, the motion of the linkage as a whole and the motion of the links inter se may be accomplished by mechanism widely different from what I have herein shown, as will be ap parent, for example, reference to my collO swung as a whole pivotally on the horizontal axis and then one of the links may be locked in position or in substantially a single position, while the other members or links are moved relatively to it.

The horizontal axis on which the chair is swung as a whole might obviously be a pin between the side frames 30 and the seat frame 10 by the weight of the occupant and would then be above the horizontal axis and would be difficult to control.

It is to be observed that the locking mechanism is simple and effective and will hold the chair frame against angular motion as a whole in cooperation with the box cam or guide so that not only is there no motion of the chair frame as a whole, but no relative motion between the members when the lock is set.

It is to be observed that while I have extended the pins at the connection between the back and the seat frames for guidance in the box cam or slot, I do not intend to limit the invention to this specific manner of securing the guiding action. It may be done by a pin and slot arrangement otherwise arranged, that is, the location of the pin may be changed, since a control of one of the links controls all of them. Likewise, it is possible by a combination of links to secure the effect of a change of center or'guiding action of the pivot pin between the back and the seat frames or any other predetermined point on the chair frame. The side plates 31, 31 instead of being imperforate plates may be open frames if desired without departing from the invention. The pivot 29 is preferably disposed slightly forward of the axis of the pedestal 83. The

center of gravity of the average occupant of the chair will, when the chair is in the position shown in Fig. 1, fall back of the horizontal pivot 29.

I do not intend to be limited to the details shown and described just as they are recited as essential in the appended claims.

I claim:

1. In a chair of the class described, the combination of a chair frame comprising substantially parallel longitudinal members and connected parallel transverse members, said longitudinal and transverse members constituting links and being pin jointed together to form a parallelogrammatic frame, a base frame, one of the longitudinal members being pivoted on a horizontal pivot on the base frame, first means for holding the members in substantially fixed angular relation to each other while the chair frame as a whole is swung pivotally on said horizontal pivot, and second means for holding said one longitudinal member in substantially fixed angular position while said transverse members are swung angularly with respect thereto, said first and second holding means being operable progressively and in a definite cycle with each rendered operative a U-shaped base frame, one of the longitudinal members being pivoted in the U-shaped base frame on a substantially horizontal axis, first means for holding the members in substantially fixed angular relation to each other while the chair frame as a whole is swung pivotally on the base frame, and second means for holding said one longitudinal member in substantially fixed angular position with re spect to the base frame while said transverse members are swung angularly with respect thereto, said first and second holding means being operable progressively and in a definite cycle with each rendered operative and inoperative by the swinging action of the chair.

3. In a chair of the class described, a chair frame comprising substantially parallel longitudinal members and substantially parallel transverse members, said members constitutinglinks and being pin jointed together to form a parallelogrammatic frame, a U- shaped base frame, one of the longitudinal members being pivoted in the U-shaped base frame on a horizontal axis, manually releasable means for locking one of the. members to the'base frame to lock the chair frame as a whole against pivotal movement and means released by the swinging action of thechair for holding the members against relative pivotal movement with respect to each other but permitting angular movement of the chair frame asa whole.

4. In a chair of the class described, the combination of a chair frame comprising substantially parallel longitudinal members and substantially parallel transverse mem bers, said members being pinjointed together to form a parallelogrammatic frame, a base frame, one of the longitudinal members being pivoted on a horizontal axis on the base frame, means for holding the chair frame as a whole against pivotal motion on said base frame, and meansreleased by the swinging action of the chair-for locking the members against pivotal motion in respect to eachother.

5. In a chair of the class described, the combination ofa chair frame comprising substantially parallel longitudinal members and substantially parallel transverse members, said longitudinal and transverse members constituting links and being pin ointed together to form a parallelogrammatic frame, a base frame, one of the longitudinal members being pivoted on a horizontal axis in the base frame,

means for holding the members in substantially fixed angular relation to each other while the chair frame as a whole is swung pivotally on the base frame, and means released by the swinging action of the chair for holding said one longitudinal member in sub stantially fixed angular position with respect to the base frame while said transverse members are swung angularly with respect thereto, and means for locking the chair frame in either of the aforesaid positions.

6. In a chair of the class described, a chair frame comprising longitudinal members and transverse members pin jointed together, a U-shaped base frame, one of the longitudinal members on each side of the chair frame being pivoted on a horizontal axis in the U-shaped base frame, means controlling the swinging of the chair frame as a unit upon the horizontal pivot of the base frame to bring the chair to hair dressing position, and means controlling the swinging of the members of the chair frame angularly with respect to each other to bring the chair frame to facial treatment position, said members of the chair frame being adapted to be locked in any angular posit-ion and the said one longitudinal memher being adapted to be locked in any desired angular position with respect to the base frame and released by the swingingaction of the chair.

7. In combination, in a chair of the class described, longitudinal members comprising arm rests and a seat frame and transverse members comprising leg frames and a back frame, said members being pin jointed together in substantially parallelogrammatic form, a base frame in which the chair frame is pivotally mounted on a horizontal axis, cam means guiding the chair frame as a whole in angular relation to the base frame, and guiding means guiding the members in angular relation with respect to each other and lock ing means for locking the members in any desired position to the base frame.

8. In combination, a chair frame compris ing a back member, a leg member, an arm member and a seat member pin jointed together, a base frame pivotally connected to the chair frame on a horizontal axis and a box cam on the base frame cooperating with a proj ection 011 the chair. frame, said box cam having a portion substantially concentric with the horizontal axis, having another portion substantially concentric with a point on the back frame member, a rod extending between the chair frame member and the base member,

said base member having means for locking the rod.

9. In a chair of the class described, the combination of a pivotally connected chair frame and a base frame upon which the chair frame is pivoted on a substantially horizontal axis, pins controlling the angular position of the chair frame members with respect to each other to hold the seat of the chair substantially horizontal and the back of the chair substantially Vertical in one limit of the angular motion of the members, means for guiding the chair frame as a whole to different angular positions on said base frame, and means for guiding the angular motion of the members in respect to each other to the opposite extreme position of motion where the seat and the back stand at an angle of more than ninety degrees and less than one hundred and eighty degrees in respect to each other, the seat being tilted downwardly to the rear, and means for locking the chair frame upon the base frame in any of the aforesaid positions. 10. In combination, a seat frame and a back frame pivoted to each other, a leg frame and an arm rest pivoted to each other, said members being pivoted for substantially parallelogrammatic motion, an intermediate member pivoted to the back frame and to the leg frame, a foot board member pivoted to the lower end of the leg frame, a link connecting the seat frame with the foot board in substantially parallelogrammatic relation, a U- shaped base frame pivoted to the intermediate member on a horizontal axis, said U- shaped base frame comprising side plates one of said side plates having a box cam, and a pin projecting from one of the members into said box cam.

11. In combination, a seat frame and a back frame pivoted to each other, a leg frame and an arm rest pivoted to each other, said members being pivoted for substantially parallelogrammatic motion, an intermediate member pivoted to the back frame and to the leg frame, a foot board member pivoted to the lower end of the leg frame, a link connecting the seat frame with the foot board in substantially parallelogrammatic relation, a U- shaped base frame pivoted to the intermediate members on a horizontal axis, said U-shaped base frame comprising a side plate having a box cam, a pin projecting from one of the members into said box cam, a locking rod extending from the leg frame to the base frame, a locking cam for (locking said rod, and a handle controlling said locking rod.

12. In combination, a chair frame comprising a back and a seat pivotally connected together, a base frame pivotally connected on a horizontal axis to the chair frame, a guiding pm at the pivot of the back and seat to each other, and a groove for guiding said pin.

13. A chair frame comprising an arm member, a seat member, a back member, and a leg member pivotally connected in parallelogrammatic form, a foot board pivoted to the leg member, a controlling link connected between the foot member and the seat member, said link, said foot member, said leg frame member and said seat member forming a second parallelogrammatic frame, said two parallelogrammatic frames having a leg frame member in common, a base frame on which the chair frame is supported, and a guide controlling the path of motion of one of the pivots of the chair frame member.

1a. A chair frame, comprising an arm member, a seat member, a back member, and a leg member pivotally connected in parallelo grammatic form, a foot board pivoted to the leg member, a controlling link connected between the foot member and the seat member, said link, said foot member, said leg frame member and said seat member forming a second parallelogrammatic frame, said two parallelogrammatic frames having a leg frame member in common, a base frame on which the chair frame is supported, a guide controlling the path of motion of one of the pivots of the chair frame member, and a looking rod connecting the chair frame with the base and adapted in cooperation with said guide to lock the chair frame in any predetermined position.

15. In a chair, a base frame, a chair frame comprising longitudinal and transverse members pivoted together to form a quadrilateral linkage, said chair frame being pivoted on a substantially horizontal axis on the base frame and cooperating guiding means on the chair frame and the base frame for controlling the position of the chair frame with respect to the base frame and for con trolling the position of the members relative to each other, said cooperating guiding means being operable by the swinging action of the chair and progressively and in a definite cycle.

16. In a chair, a base frame, a chair frame comprising transverse and longitudinal member pinned together to form quadrilateral linkage, the chair frame being pivoted on a substantially horizontal axis intermediate the ends of a transverse member upon the base frame, said chair frame comprising a seat member, said axis being located above the seat member, said chair frame being capable of motion about the pivot, and the chair frame linkage being capable of motion of the links about their pin joints, and means controlled by the swinging action of the chair for looking a member of the chair frame against motion relative to either the base frame or the other members.

17. In a chair, abase frame, a chair frame comprising a pin ointed linkage, one link of which is pivoted on the base frame, a cooperating pin and slot guide between the base frame an d the chair frame for controlling the relative motion of the links with respect to each other and the relative motion of the chair frame with respect to the base frame.

18 In a chair, a base frame comprising a pedestal having a transverse member mounted thereon upon a vertical pivot, a pair of side frames connected along their lower margins to the transverse member, a chair frame comprising a seat member, an arm rest member, a back member and a leg member. all pinjointed together to form a quadrilateral linkage, intermediate members on each side of the chair frame pin jointed to the back and leg members intermediate the arm rest member and the seat member, a substantially horizontal pin oint between the intermediate member and the side plate on each side of the chair frame, the side frames extending rearwardly to substantially the back when the back is in substantially upright position, guiding means between the side frames and the chair frame, and locking means cooperat ing with the guiding means to hold the chair frame fixedly upon the base frame.

19. In combination, a chair frame comprising a. quadrilateral pin jointed linkage, a base frame pivotally connected on a substantiaily horizontal axis to the chair frame, and a pin and slot connection between said frames for controlling the position of the chair frame with respect to the base frame and for controlling the position of the links with respectto each other.

20. In combination, a chair frame comprising a quadrilateral pin jointed linkage, a base frame pivotally connected on a substan tie horizontal axis to the chair frame, and guiding means for guiding the chair frame substantially as a whole with respect to the base frame into hair dressing position and for guiding the movements of the links relative to each other into facial treatment position.

21. In achair, a base frame, a chair frame comprising link members all pivotally con nected to each other and forming a quadrilateral linkage, the chair frame being pivoted on a substantially horizontal axis upon the base frame, said chair frame being swingable about said pivot on the base frame with said link members in fixed angular relation, and said link members having relative angular motion for collapsing and expanding said linkage, cam means having a first cam part for holding the quadrilateral linkage against swinging movement upon the base frame and a second cam part for holding the link members of said quadrilateral linkage against relative angular movement, said first and second cam parts being correlated to prevent simultaneous release of the linkage from both and each in holding operation during release of the linkage from the other.

22. In a chair, a base frame, a chair frame comprising link members all pivotally connected to each other and forming a quadrilateral linkage, the chair frame being pivoted on a substantially horizontal axis upon the base frame, said chair frame being swingable about said pivot on the base frame with said link members in fixed angular relation, and said link members having relative angular motion for collapsing and expanding said linkage, cam means having a first cam part for holding the quadrilateral linkage against swinging movement upon the base frame and a second cam part for holding the link members of said quadrilateral linkage against and also controlling relative angular motion of the links of said linkage for collapse and expansion thereof.

23. In a chair, a base frame, a chair frame comprising link members all pivotally connected to each other and forming a quadrilateral linkage, the chair frame being pivoted on a substantially horizontal axis upon the base frame, said chair frame being swingable about said pivot on the base frame with said link members in fixed angular relation, and said link members having relative angular motion for collapsing and expanding said linkage and cam means for holding the quadrilateral linkage against swinging movement about the horizontal axis on the base frame and the link members of said quadrilateral linkage against relative angular movement, said cammeans being operative to prevent simultaneous release of the linkage both for swinging movement about the pivot on the base frame andfor relative angular motion between the links of said linkage.

24. In a chair, a base frame, a chair frame comprising link members all pivotally connected to each other and forming a quadrilateral linkage, the chair frame being pivoted on a substantially horizontal axis upon the base frame, said chair frame being swingable about said pivot on the base frame with said link members in fixed angular relation and said link members having relative angular motion for collapsing and expanding said linkage and cam means for holding the quadrilateral linkage against swinging movement about the horizontal axis on the base frame and the link members of said quadrilateral linkage against relative angular movement, said cam means being operative to prevent simultaneous release of the linkage both for swinging movement about the pivot on the base frame and for relative angular motion between the links of said linkage, and a common lever for controlling the swinging movement of the chair frame about the pivot on the base frame and also controlling relative angular motion of the links of said linkage for collapse and expansion thereof.

25. A chair frame comprising an arm member, a seat member, a back member, and a leg member, pivotally connected and forming a parallelogrammatic linkage adapted to be collapsed and expanded, a second parallelogrammatic linkage including a foot-board pivoted to the leg member, and a controlling link pivoted to the foot-board and connected to the seat member, said parallelogrammatic linkages having said leg member in common and a base frame on which the chair is swingably supported.

26. A chair comprising, a seat member, a back member, and a leg member comprising link members pivot-ally connected and forming a parallelogrammatic linkage, said link members having relative angular motion, a foot board member pivoted to said leg member and means connecting said footboard member with said linkage for swinging the footboard member into different angular relations relative said leg member with the relative angular motion of said link members.

In witness whereof, I hereunto subscribe my name this 7th day of August, 1928.

WVILLIAM MEYER. 

